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Atomic-Scale Dynamics Probed by Photon Correlations.

Anna Rosławska1, Christopher C Leon1, Abhishek Grewal1

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Researchers use scanning tunneling microscopy (STM) and picosecond photon correlation spectroscopy to study ultrafast light interactions at the atomic scale. This technique probes nanoscale phenomena in areas like quantum optics and photosynthesis.

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Area of Science:

  • Atomic-scale physics
  • Nanoscale light-matter interactions
  • Ultrafast spectroscopy

Background:

  • Light absorption and emission involve atomic-scale phenomena crucial for processes like photosynthesis and quantum optics.
  • Characterizing these phenomena requires simultaneous access to picosecond temporal and picometer spatial scales.

Purpose of the Study:

  • To describe a method for studying ultrafast atomic-scale phenomena using advanced spectroscopy.
  • To highlight recent advancements in scanning tunneling microscope-induced luminescence (STM-IL) for nanoscale investigations.
  • To propose future experiments on light-matter interactions at the nanoscale.

Main Methods:

  • Utilizing state-of-the-art picosecond photon correlation spectroscopy.
  • Employing luminescence induced at the atomic scale with a scanning tunneling microscope (STM-IL).

Main Results:

  • Demonstrated capability to study single-photon emitters and dynamics of excitons, charges, molecules, and atoms at the nanoscale.
  • Enabled simultaneous picosecond temporal and picometer spatial resolution for ultrafast phenomena.

Conclusions:

  • STM-IL combined with picosecond photon correlation spectroscopy is a powerful tool for nanoscale ultrafast science.
  • This approach opens new avenues for understanding fundamental light-matter interactions at the atomic level.
  • Future strategies are proposed for advancing nanoscale ultrafast measurements and theoretical understanding.